Knuckleball is the story of Brett Leake who was diagnosed with Muscular Dystrophy at 13. With the support of his family, he has become a nationally recognized comedian appearing on The Tonig... Read allKnuckleball is the story of Brett Leake who was diagnosed with Muscular Dystrophy at 13. With the support of his family, he has become a nationally recognized comedian appearing on The Tonight Show with Jay Leno five times.Knuckleball is the story of Brett Leake who was diagnosed with Muscular Dystrophy at 13. With the support of his family, he has become a nationally recognized comedian appearing on The Tonight Show with Jay Leno five times.